When you sign out of one account, you also sign out of all your accounts on that browser:

On your computer, go to a Google page, like www.google.com.

On the top right, select your profile image or initial.

On the menu, choose Sign out.

Accounts have separate settings

You can control your settings separately for each of your accounts. When you sign in to multiple accounts, account settings usually aren't shared between accounts. For example, your accounts might have different language settings or sign-in steps.

Sometimes settings might carry over

If you're signed in to multiple accounts at the same time, sometimes we can't tell which account you're using. For example, if you're signed in to two accounts and you open a new browser window, we aren't sure which account you want to use. In cases like these, Google might apply settings from your default account, like its Web & App Activity and Ads Personalization settings.